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answer
Joined: 08 Dec 2004
Posts: 4
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 16 Aug 2006 6:19 How to predict the phase noise of PLL? |
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Y.C Park
Joined: 20 Dec 2004
Posts: 47
Helped: 2
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| 16 Aug 2006 6:33 Re: How to predict the phase noise of PLL? |
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Hello
You can simulation by cadence PSS simulation.
To reduce simulation time, You'd better change digital block to VerilogA models.
Thanks.
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lewisflame
Joined: 07 Dec 2004
Posts: 10
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| 21 Aug 2006 13:49 How to predict the phase noise of PLL? |
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| Do we have to consider phase noise of PLL, when we design a pipeline ADC system modeling where clock is generated by PLL?
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khouly
Joined: 20 Oct 2003
Posts: 2470
Helped: 342
Location: EGYPT
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| 22 Aug 2006 23:28 Re: How to predict the phase noise of PLL? |
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u can predict PLL phase noise simply by hand analysis , but it is hard
1) check if major contributin of the phase noise
2) check the transfer function of the PLL due to this source
note . for phase noise from reffernce "the PLL is low pass filter"
for phase noise from the VCO "the PLL is high pass filter
3) caluate the gain and attenuation of every source , add them finally
this is a crude approximation for phase noise calculation
but if u want a accurate results , PSS with phase noise simulation is a must
khouly
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jfyan
Joined: 03 May 2006
Posts: 199
Helped: 22
Location: shanghai,china
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| 23 Aug 2006 1:47 Re: How to predict the phase noise of PLL? |
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hi,
i suggest you join anthoer forum:
http://www.designers-guide.org/.
i think it is one of the most technical forum about jitter and phase noise to PLL.
enjoy.
jeff.yan
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shaikhsarfraz
Joined: 08 Aug 2006
Posts: 306
Helped: 19
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| 24 Aug 2006 10:41 Re: How to predict the phase noise of PLL? |
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Hi,
You can predict the phase noise of PLL by performing PSS and PNOISE analysis.
Thanks
Shaikh Sarfraz
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